Water-cooler for furnaces



L,L.KN0 WATER COOLER FOR FURNACES.

APPLICATON FILED APR. 3, 1918.

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WATER COOLER FOR FURNACES.

APPLICATION man APR. 3. ma.

Patentod 15, 1921.

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L. l-. KNOX.

WATER COOLER FOR FURNACES.

APPLlCATION HLED APR. 3, 15H8i Mar. 15

WITNESSES @MMQW UNITED STATES PATENT OFFICE. y

LUTnEa. I., intox, oErELLEvUE, rENNsYLvANIA, AssIoNoE To BLAw-xNox comrANY, or PITTSBURGH, PENNSYLVANIA, A CORPORATION or NEW .IEEsEY.

' Specication of Letters Patent.

WATER-COOLER FOR FUNACES.

Patented Mar. 15, 1921.

*Animation ined Apre s, 191s. serial No. 226,405.

To all whom 'it may concern: i

Be it known that I, LUTHER L. KNOX, a citizen of the United States, residing at Bellevue, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Water-Coolers for Furnaces, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification in which: Figure l is a transverse vertical section of a furnace having my invention applied thereto.

Fig. 2 is a. side elevation of a portion of the furnace.

Fig. 3 is an enlar edl section of a furnace wall having one o my coolers embedded therein.

Fig. 4 is a side view of the cooler, showing a slight modification, and

Fig. 5 is a sectional view of the cooler shown in Fig. 4.

My invention has relation to wall coolers for furnaces and is designed to provide a simple and eicient form of cooler which can be readily laced in the wall of the furnace to be coo ed.

Referring to the accompanying drawings, the numeral 2 designates the side walls of the furnace and the opposite sides of the hearth 3 to which I have shown my improved coolers applied. I desire it understood, however, at the invention is not limited to the use of any particular type of furnace.

Each of the coolers consists of a hollow sheet metal body of general rectangular form and of any desired dimensions. .If desired, the dimensions can be arranged with respect to the dimensions of the bricks used in constructing a furnace Wall so as to facilitate the setting of the coolers in the wall. The coolers are designed to set substantially flush with the outer surface of the wall, their outer sides bein flat, while their inner faces are lo ltudina 1y recessed, as indicated at 4, there y forming the upper and lower projections 5 which extend into the furnace wall to a ater depth than the recessed portion. 'fllig cooler can be conveniently made of an outer flat sheet or plate 6, and an inner sheet or plate 7, the latter being bent and shaped to form the recess and rojections, its edge portion being weld to the edges of the plates 6, as in icated at 7 8 designates a water inlet connection having an arm 9 extending downwardly to a point near the bottom of the cooler, at one end portion thereof. 10 is an outlet connection at the top, near the opposite end portion of the cooler, the adjacent upper wall of the cooler being preferably somewhat raised at this point so as to permit the outlet to be placed at a sufficiently high point to prevent the formation of steam pockets within the cooler. 1l designates a suitable plugged washout opening, or connection.

Where the coolers are made in relatively large sizes, they may be provided with any suitable internal bracers and reinforcing means, such means being indicated at 12 in Fig. 4 and one of them being shown in detail in Fig. 5, and being generally of the character described and claimed in my Patent No. 1,168,647. Any other suitable interior bracing means may, however, be employed.

A plurality of the coolers may be placed end to end in the wall to be cooled, as shown in Fig. 2. While I have shown only one row of tiers of the coolers in this ligure, it will be understood that more than one row of tiers can be employed if desired.

The longitudinally recessed form of the inner faces of the coolers enables them to be readily bonded into the wall. This form also enables the employment of a suiciently large body of cooling fluid within the wall, without unduly weakening the wall. It also very materially increases the area of cooling surface in contact with the furnace wall.

I claim:

1. The combination with a vertically extendin furnace wall, of a cooler therefor, consisting of a hollow metal structure having water-circulating connections, and set into the outer portion of the said wall, said structure having a substantially fiat outer surface, but having a plurality of hollow horizontally extending ribs projecting from its inner surface into the body of the wall, and receiving portions of the wall between them, substantially as described.

2. The combination with a vertically extending furnace wall, of a coolerrtherefor, consisting of a hollow metal structure having water-circulating connections, and set into the outer portion of the said wall, said structure having a substantiall flat outer surface, but having a hollow horizontally extending rib projecting into the wall from both its upper and lower edge portions, and receiving e portion `of the wall between them, said ribs terminating short of the inner surface of the wall, substantially as described. Y Y

3. The combination with a. vertically eX- tending furnace wall, of e cooler therefor', consisting of a hollow metal vstructure having water-circulating connections, and set into the outer vportion of the seid wall, said structure havin-g e substantiel-1y lat outer surface;v but having e hollow horizontally extending rib projecting into the wall from 'both itsuppereaynd lower edge portions,` and receiving a. portion of the wallV between them, Vsaid ribs terminating short of the inner surfaceof the wall, seid cooler occupying a Zone which extends upwardly from a point near the hearth. of the furnace, substentially as described.

In testimony whereof, I have hereunto set m hand.

y LUTHER L. KNOX.- 

